I got 455 seajay territory with 50hp yammy 4strke.
I put peramatrim on , maily to keep nose down when by myself.
On a good day I do 28knots according to GPS and thats trimmed out.

Permatrim not good in big chop as it forms an air pocket and free revs.
I spoke to stones corn marine this week and they will drop motor 1 hole on next serv.
they didnt say anything about warrenty probs.